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消(xiao)(xiao)聲(sheng)(sheng)器是(shi)利用聲(sheng)(sheng)的吸(xi)(xi)收、反射、干涉等(deng)原理(li),降低通(tong)風與空(kong)調(diao)系統中氣流(liu)(liu)噪聲(sheng)(sheng)的裝置。根據消(xiao)(xiao)聲(sheng)(sheng)原理(li)的不同(tong)可以分(fen)為(wei)阻性(xing)(xing)(xing)、抗性(xing)(xing)(xing)、共(gong)振型(xing)和復(fu)合型(xing)等(deng)。一(yi)、阻性(xing)(xing)(xing)消(xiao)(xiao)聲(sheng)(sheng)器,阻性(xing)(xing)(xing)消(xiao)(xiao)聲(sheng)(sheng)器利用吸(xi)(xi)聲(sheng)(sheng)材料(liao)(liao)的吸(xi)(xi)聲(sheng)(sheng)作用而消(xiao)(xiao)聲(sheng)(sheng)的。其構造是(shi)把(ba)吸(xi)(xi)聲(sheng)(sheng)材料(liao)(liao)固定在(zai)氣流(liu)(liu)流(liu)(liu)動的管道內(nei)壁,或(huo)按一(yi)定方式排列在(zai)管道或(huo)殼體內(nei)構成阻性(xing)(xing)(xing)消(xiao)(xiao)聲(sheng)(sheng)器,吸(xi)(xi)聲(sheng)(sheng)材料(liao)(liao)能(neng)(neng)夠把(ba)入射在(zai)其上的聲(sheng)(sheng)能(neng)(neng)部(bu)分(fen)地吸(xi)(xi)收掉。聲(sheng)(sheng)能(neng)(neng)之所以能(neng)(neng)被吸(xi)(xi)收,是(shi)由(you)于吸(xi)(xi)聲(sheng)(sheng)材料(liao)(liao)的多(duo)孔性(xing)(xing)(xing)和松(song)散性(xing)(xing)(xing)。當聲(sheng)(sheng)波進入孔隙,引起孔隙中的空(kong)氣和材料(liao)(liao)產生微小的振動,由(you)于摩擦和粘滯阻力。使(shi)相當一(yi)部(bu)分(fen)聲(sheng)(sheng)能(neng)(neng)化為(wei)熱能(neng)(neng)而被吸(xi)(xi)收掉。
消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)機(ji)(ji)(ji)(ji)(ji)一般是采(cai)用離心式(shi)(shi)(shi)風(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)和(he)軸(zhou)流式(shi)(shi)(shi)風(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)兩種(zhong)重要的(de)(de)(de)(de)(de)型式(shi)(shi)(shi)。從(cong)消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)風(feng)(feng)(feng)(feng)量(liang)、風(feng)(feng)(feng)(feng)壓(ya)(ya)考慮來看,消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)是高(gao)(gao)比轉高(gao)(gao)效率的(de)(de)(de)(de)(de)風(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji),更加的(de)(de)(de)(de)(de)適合選用軸(zhou)流風(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)。軸(zhou)流式(shi)(shi)(shi)消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)有兩種(zhong)設計(ji)型式(shi)(shi)(shi),一種(zhong)為(wei)電(dian)(dian)機(ji)(ji)(ji)(ji)(ji)與(yu)主(zhu)(zhu)氣流分(fen)(fen)離型式(shi)(shi)(shi),另(ling)一種(zhong)為(wei)電(dian)(dian)機(ji)(ji)(ji)(ji)(ji)置于(yu)主(zhu)(zhu)氣流之(zhi)中。根據煙(yan)氣溫度的(de)(de)(de)(de)(de)不同,采(cai)用不同型式(shi)(shi)(shi)的(de)(de)(de)(de)(de)消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji),溫度大于(yu)400℃時(shi),采(cai)用電(dian)(dian)機(ji)(ji)(ji)(ji)(ji)與(yu)主(zhu)(zhu)氣流分(fen)(fen)離型式(shi)(shi)(shi),溫度小于(yu)400℃大于(yu)150℃,兩種(zhong)型式(shi)(shi)(shi)的(de)(de)(de)(de)(de)電(dian)(dian)機(ji)(ji)(ji)(ji)(ji)都(dou)可(ke)以選擇,在(zai)(zai)(zai)溫度小于(yu)150℃的(de)(de)(de)(de)(de)時(shi)候,采(cai)用電(dian)(dian)機(ji)(ji)(ji)(ji)(ji)置于(yu)主(zhu)(zhu)氣流之(zhi)中。 軸(zhou)流消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)流量(liang)范(fan)圍(wei)從(cong)7200m?/h至110000m?/h,有不同型號的(de)(de)(de)(de)(de)編制,用來滿足(zu)不同通(tong)(tong)風(feng)(feng)(feng)(feng)排(pai)(pai)煙(yan)流量(liang)的(de)(de)(de)(de)(de)需求(qiu)。消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)可(ke)以根據壓(ya)(ya)力情況的(de)(de)(de)(de)(de)不同分(fen)(fen)為(wei)兩種(zhong)類型,一類為(wei)軸(zhou)流式(shi)(shi)(shi)消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)機(ji)(ji)(ji)(ji)(ji),其各(ge)機(ji)(ji)(ji)(ji)(ji)號的(de)(de)(de)(de)(de)壓(ya)(ya)力在(zai)(zai)(zai)600Pa左右,另(ling)一類為(wei)斜流消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji),各(ge)機(ji)(ji)(ji)(ji)(ji)號的(de)(de)(de)(de)(de)壓(ya)(ya)力在(zai)(zai)(zai)1000Pa左右。為(wei)了(le)滿足(zu)排(pai)(pai)煙(yan)量(liang)和(he)通(tong)(tong)風(feng)(feng)(feng)(feng)換氣的(de)(de)(de)(de)(de)要求(qiu),消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)風(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)一般都(dou)設計(ji)了(le)雙速(su)型的(de)(de)(de)(de)(de)結構(gou)模式(shi)(shi)(shi)。低(di)速(su)可(ke)以通(tong)(tong)風(feng)(feng)(feng)(feng)使用,高(gao)(gao)速(su)可(ke)以排(pai)(pai)放煙(yan)霧,這樣(yang)不但(dan)可(ke)以節約能源同時(shi)又降低(di)了(le)噪聲污染。
1.風管程度安裝,邊長尺寸小于等于400mm,間距不應大于4m;大于400mm,不應大于3m;對于薄鋼板法蘭的風管,其支、吊架間距不應大于3m。2.風管垂直安裝,間距不應大于4m,不銹鋼通風管道單根直管至少應有2個固定點。3.支、吊架不宜設置在風口、閥門、檢討門及自控機構處,離風口或插接管的距離不宜小于200mm。4.當程度懸吊的主、干風管長度超過20m時,值得信賴的不銹鋼通風管道應(ying)(ying)設(she)置防(fang)止擺動固(gu)定(ding)點,每(mei)個系統(tong)不(bu)(bu)應(ying)(ying)少(shao)于(yu)(yu)(yu)(yu)1個。5.防(fang)火閥(fa)直徑或(huo)(huo)長邊尺寸大(da)于(yu)(yu)(yu)(yu)等(deng)于(yu)(yu)(yu)(yu)630mm時,宜設(she)獨立支(zhi)、吊架(jia)。6.帶高(gao)(gao)效過濾器的(de)(de)(de)送(song)風(feng)(feng)(feng)(feng)口,應(ying)(ying)采(cai)取可分離調(diao)節高(gao)(gao)度的(de)(de)(de)吊桿。金屬(shu)風(feng)(feng)(feng)(feng)管的(de)(de)(de)加固(gu):矩形(xing)風(feng)(feng)(feng)(feng)管邊長大(da)于(yu)(yu)(yu)(yu)630mm、保溫(wen)風(feng)(feng)(feng)(feng)管邊長大(da)于(yu)(yu)(yu)(yu)800mm,并且管段(duan)長度大(da)于(yu)(yu)(yu)(yu)1250mm或(huo)(huo)低壓風(feng)(feng)(feng)(feng)管單邊平面(mian)積大(da)于(yu)(yu)(yu)(yu)1.2m2、中(zhong)、高(gao)(gao)壓風(feng)(feng)(feng)(feng)管大(da)于(yu)(yu)(yu)(yu)1.0m2中(zhong),均應(ying)(ying)采(cai)用加固(gu)辦法。角(jiao)鋼(gang)、加固(gu)筋的(de)(de)(de)加固(gu),其高(gao)(gao)度應(ying)(ying)小于(yu)(yu)(yu)(yu)或(huo)(huo)等(deng)于(yu)(yu)(yu)(yu)風(feng)(feng)(feng)(feng)管的(de)(de)(de)寬度。角(jiao)鋼(gang)、加固(gu)筋與風(feng)(feng)(feng)(feng)管鉚接(jie)的(de)(de)(de)間(jian)隔應(ying)(ying)均勻,不(bu)(bu)應(ying)(ying)大(da)于(yu)(yu)(yu)(yu)220mm。.對于(yu)(yu)(yu)(yu)凈化空(kong)調(diao)系統(tong),不(bu)(bu)應(ying)(ying)在風(feng)(feng)(feng)(feng)管內(nei)設(she)加固(gu)框及加固(gu)筋。
1、在(zai)(zai)安(an)(an)(an)(an)裝(zhuang)(zhuang)中(zhong)(zhong)央(yang)空調(diao)前,要先(xian)進(jin)行(xing)吊(diao)頂的(de)(de)(de)(de)安(an)(an)(an)(an)裝(zhuang)(zhuang),為了(le)在(zai)(zai)以(yi)后(hou)的(de)(de)(de)(de)使用中(zhong)(zhong)不(bu)會(hui)出現意(yi)外(wai),我們在(zai)(zai)安(an)(an)(an)(an)裝(zhuang)(zhuang)吊(diao)頂內(nei)部的(de)(de)(de)(de)機體(ti)時(shi)需(xu)要注意(yi)兩(liang)點(dian),一(yi)(yi)點(dian)就(jiu)是(shi)(shi)中(zhong)(zhong)央(yang)空調(diao)的(de)(de)(de)(de)內(nei)機不(bu)要距離房頂太近,二點(dian)那就(jiu)是(shi)(shi)要讓內(nei)機在(zai)(zai)安(an)(an)(an)(an)裝(zhuang)(zhuang)好(hao)(hao)后(hou)有一(yi)(yi)定(ding)的(de)(de)(de)(de)坡度,不(bu)要讓內(nei)機保持水平的(de)(de)(de)(de)。2、在(zai)(zai)中(zhong)(zhong)央(yang)空調(diao)的(de)(de)(de)(de)內(nei)機安(an)(an)(an)(an)裝(zhuang)(zhuang)好(hao)(hao)之(zhi)后(hou),就(jiu)要進(jin)行(xing)冷(leng)(leng)媒(mei)(mei)(mei)(mei)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)安(an)(an)(an)(an)裝(zhuang)(zhuang)了(le),冷(leng)(leng)媒(mei)(mei)(mei)(mei)管(guan)(guan)(guan)(guan)在(zai)(zai)中(zhong)(zhong)央(yang)空調(diao)中(zhong)(zhong)是(shi)(shi)非常重要的(de)(de)(de)(de),在(zai)(zai)安(an)(an)(an)(an)裝(zhuang)(zhuang)的(de)(de)(de)(de)時(shi)候一(yi)(yi)定(ding)要注意(yi)。在(zai)(zai)安(an)(an)(an)(an)裝(zhuang)(zhuang)冷(leng)(leng)媒(mei)(mei)(mei)(mei)管(guan)(guan)(guan)(guan)時(shi),不(bu)要將兩(liang)根(gen)銅(tong)管(guan)(guan)(guan)(guan)直(zhi)接進(jin)行(xing)焊(han)接,中(zhong)(zhong)間要有歧管(guan)(guan)(guan)(guan)來進(jin)行(xing)隔(ge)開(kai),在(zai)(zai)焊(han)接的(de)(de)(de)(de)時(shi)候要在(zai)(zai)東莞內(nei)釋(shi)放一(yi)(yi)下氮氣,這(zhe)樣可以(yi)保證(zheng)銅(tong)管(guan)(guan)(guan)(guan)內(nei)的(de)(de)(de)(de)壓(ya)力(li)不(bu)被破(po)壞,在(zai)(zai)所以(yi)管(guan)(guan)(guan)(guan)道都焊(han)接完畢后(hou),需(xu)要使用氮氣來對管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)內(nei)部進(jin)行(xing)清(qing)理。3、冷(leng)(leng)媒(mei)(mei)(mei)(mei)管(guan)(guan)(guan)(guan)安(an)(an)(an)(an)裝(zhuang)(zhuang)好(hao)(hao)之(zhi)后(hou),就(jiu)要開(kai)始(shi)對冷(leng)(leng)凝(ning)管(guan)(guan)(guan)(guan)進(jin)行(xing)安(an)(an)(an)(an)裝(zhuang)(zhuang)了(le),冷(leng)(leng)暖管(guan)(guan)(guan)(guan)是(shi)(shi)用來排水的(de)(de)(de)(de),是(shi)(shi)要在(zai)(zai)內(nei)機出接到(dao)室外(wai)的(de)(de)(de)(de),在(zai)(zai)安(an)(an)(an)(an)裝(zhuang)(zhuang)的(de)(de)(de)(de)時(shi)候要留有一(yi)(yi)定(ding)的(de)(de)(de)(de)坡度,在(zai)(zai)接出室外(wai)后(hou)要落到(dao)地面。
風(feng)(feng)(feng)機分類可以(yi)按氣體(ti)流(liu)(liu)動(dong)(dong)的(de)方向,分為(wei)離(li)(li)心(xin)(xin)式(shi)(shi)、軸流(liu)(liu)式(shi)(shi)、斜流(liu)(liu)式(shi)(shi)和橫(heng)流(liu)(liu)式(shi)(shi)等類型。這種(zhong)風(feng)(feng)(feng)機分類的(de)機器有:離(li)(li)心(xin)(xin)風(feng)(feng)(feng)機工作時,動(dong)(dong)力(li)機(主(zhu)要是電(dian)動(dong)(dong)機)驅(qu)動(dong)(dong)葉(xie)輪(lun)(lun)在(zai)蝸形機殼(ke)內(nei)旋(xuan)轉,空氣經吸氣口(kou)從(cong)葉(xie)輪(lun)(lun)中(zhong)心(xin)(xin)處吸入。由于葉(xie)片對氣體(ti)的(de)動(dong)(dong)力(li)作用(yong)(yong)(yong),氣體(ti)壓(ya)力(li)和速度得以(yi)提高,并在(zai)離(li)(li)心(xin)(xin)力(li)作用(yong)(yong)(yong)下沿著葉(xie)道(dao)甩向機殼(ke),從(cong)排(pai)氣口(kou)排(pai)出。因氣體(ti)在(zai)葉(xie)輪(lun)(lun)內(nei)的(de)流(liu)(liu)動(dong)(dong)主(zhu)要是在(zai)徑向平(ping)面內(nei),故又稱(cheng)徑流(liu)(liu)風(feng)(feng)(feng)機。離(li)(li)心(xin)(xin)風(feng)(feng)(feng)機主(zhu)要由葉(xie)輪(lun)(lun)和機殼(ke)組(zu)成,小型風(feng)(feng)(feng)機的(de)葉(xie)輪(lun)(lun)直接裝在(zai)電(dian)動(dong)(dong)機上中(zhong)、大(da)型風(feng)(feng)(feng)機通(tong)過聯(lian)軸器或皮帶輪(lun)(lun)與電(dian)動(dong)(dong)機聯(lian)接。離(li)(li)心(xin)(xin)風(feng)(feng)(feng)機一(yi)般(ban)為(wei)單側進氣,用(yong)(yong)(yong)單級葉(xie)輪(lun)(lun);流(liu)(liu)量大(da)的(de)可雙側進氣,用(yong)(yong)(yong)兩個背(bei)靠背(bei)的(de)葉(xie)輪(lun)(lun),又稱(cheng)為(wei)雙吸式(shi)(shi)離(li)(li)心(xin)(xin)風(feng)(feng)(feng)機。